version=4
opts=filenamemangle=s/(?:.*\/)?v?([^\/]+)\.tar\.gz/prometheus-blackbox-exporter-$1.tar.gz/,\
     dversionmangle=s/\+ds\d*$//,\
     uversionmangle=s/-?(rc\.?\d+)/~$1/ \
  https://github.com/prometheus/blackbox_exporter/tags \
  (?:.*/)?v?(\d[\d\.]*(?:-?rc\.?\d+)?)\.tar\.gz
